lab1986S - 50 MN“ MS Physics 221-886-Fina1-A Page This...

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Unformatted text preview: 50 MN“ MS Physics 221-886-Fina1-A Page This laboratory final consists of 8 questions, each worth 1/2 point toward your total score for the course. ' ‘ 87, What is the distance between the jaws of the vernier caliper shown below? I ' * oz .33 .u .m- .u H-" “'I‘fi‘lnliol’lunllIIHIIHIIIIUPI [IMH‘ lull ‘|.| : ill II II n 111p} Ipluxululplulllnlu|u [II B} 'iii‘i'ilililili|il1lilililiiiiiiliilHaznrlnussiu 123L561! o 0 0 2 6 2 m v- i A. 10.5 mm B. 13.55 mrn C. 10.5 cm D. 50.6 mm E. 11.6 mm 88. The period, T, of a simple pendulum is observed for I I, I, various values of the length, L, of the string. How would you advise that this data be plotted so as to test the degree to which the data confirms or contradicts the relationship between these quantities which is predicted by Newtonian mechanics? A. Plot L vs T B. plot T vs L2 v z 2 C. plotLvs/T plot TzvsL ST: E. It really does not matter in this case; none of the above plots is of much use. the cables and 3 load cells have little weight of their own. Note that the angles shown (61 and 92) are equal. 89. A weight, w, is suspended as shown. Assume . ht era-Gaze What can be said about the relationship of the reading of load cell #1, R ,‘to the / readings, R2 and R3, of the ot er two cells? A R1 = R2 + R3 56 ,_.. il stine + R3sin6 C R1 = 0.6 R2 + 0.8 R3 D R1>= chose + R3cose E R1 = R231n9 - R331n9 Physics 221-886-Fina1-A Page 90. In laboratory, you observed the motion of an air cart released near the high end on a inclined air track. Which of the following best describes the motion of the cart after release. Consider only the interval before the cart reached the low end of the track. A. The position of the cart changed by an equal amount with the passage of each equally-sized interval of time. B. The displacement of the cart from the upper end of the track increased uniformly (i.e., linearly) with time. (:::> The velocity of the cart increased by a fixed amount with the passage of each equally-sized interval of time. D. The acceleration of the cart increased at a uniform rate as it traveled down the track. * E. The velocity of the cart was constant and depended on the inclination angle, 6, of the track to the horizontal: v = g sin 0. ,‘ The equilibrium position of an air cart held “H” i T at one end by a spring is noted as it is - ' pulled toward the right by a piece of plastic :I::_g;:: tape under various values of tension, T. The 31";;;” results for several values of tension are plotted at the right. Assume the track is level {SW == and the total weight of the cart is 2.0 N. :1; . ;;|:"rr ' 91. What is the spring constant of the {1 stretched spring (in MKS units)? Efi}:§;fi » «~o 555 (3 2.0 B. 0.5 c. 0.4 a. D. 1.5 E. 2.5 TEE ===== "‘V"'—" TV: .._..._a" 9;...” ;_-L.;. i , 3 92. Assume now that a 0.2 Newton weight is added to the top of the cart (30 that. the total weight of the cart is now 2.2 Newtons). If a tension of 0.4 Newtons is now applied to the tape, what is the equilibrium position of the cart? A. 0.70 m B. 0.60 m C. 0.50 m D. 0.30 my E. The equilibrium position cannot be found from the information given. lb, 0.4-0 = éNlm ’ Physics 221-886-Fina1-A Page 93. Two metallic electrodes are located in a slightly conducting solution and connected to a 4 volt battery as shown. The voltmeter reads the values shown below when its probes are located as given. Voltmeter Location of Location of Reading Probe #1 Probe #2 (volts) A B +1.0 A C +2.0 A D +3.0 A E +4.0 A. There is no way to tell from the information given. B. +3.0 . .» ' C. +1.0 .__. .. VA .. +\.O> +DP firm D. +4 0 a 94. When an external horizontal force of 2000 N is F: applied to a cart resting on a level 508d, the' cart accelerates at a rate of 4.0 m/s . When this external pulling force is removed, the cart decelerates (due to friction) at an approximately constant rate. The magnitude of this 2 deceleration happens also to be 4.0 m/s . (i! :e#i Determine, if you can, the mass of the cart. B. some “’3‘” C. 750 kg D. 1000 kg { E. The mass of the cart cannot be determined (Ease i=2. _i from the information above. ) ‘ QUDO.M_,£—: 77452) €3aa¥7M#Z 4' #:i) we 7dr . ‘41 1: WM =— wm/a 450w E” ...
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lab1986S - 50 MN“ MS Physics 221-886-Fina1-A Page This...

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